World Health Organization, Joint United Nations Programme on HIV/AIDS. (2024) The BBS-lite: a methodology for monitoring programmes providing HIV, viral hepatitis and sexual health services to people from key populations — UNAIDS–WHO 2024 implementation tool. Geneva: UNAIDS; World Health Organization.
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The BBS-lite (bio-behavioural survey “lite”) is a programme-based survey methodology for gathering actionable information on people from key populations to improve service delivery and guide decisions on programming for HIV, viral hepatitis and sexually transmitted infections.
Key populations are defined groups that, due to specific higher-risk behaviours, are at increased risk of HIV, viral hepatitis and sexually transmitted infections, irrespective of the epidemic type or local context. Key populations include gay men and other men who have sex with men, transgender and gender-diverse people, sex workers, people who inject drugs, and people in prisons and other closed settings. These populations often have legal and social issues related to their behaviours that increase their vulnerability to HIV. They are essential partners in an effective response to the epidemic and should be engaged in HIV service planning, provision and monitoring. Ongoing data collection and surveillance are required to track HIV, viral hepatitis and sexually transmitted infections among people from key populations, and to assess accessibility, coverage and quality of programmes providing prevention, diagnosis and treatment. Collection of data on tuberculosis (TB) prevalence and related services may also be relevant for key populations, particularly among people in prisons and other closed settings.
This important strategic information is required to shape policy, determine funding allocations, guide programming, and enhance the reach and quality of services. A range of indicators are used by national governments, programme managers, implementers and service providers to monitor the epidemics of HIV, viral hepatitis and sexually transmitted infections, and the success of responses in meeting their objectives. Table 1 outlines the various domains addressed by these indicators. To report on these indicators, survey data and routine programme data are required. The frequency at which different indicators need to be measured depends on reporting requirements, programming needs, and how quickly the results of the indicator being measured might change over time.
G Health and disease > Disease by cause (Aetiology) > Communicable / infectious disease > HIV
G Health and disease > Disease by cause (Aetiology) > Communicable / infectious disease > Hepatitis B (HBV)
G Health and disease > Disease by cause (Aetiology) > Communicable / infectious disease > Hepatitis C (HCV)
HA Screening, identification, and diagnostic method > Physical / medical screening, assessment and diagnostic method
J Health care, prevention, harm reduction and treatment > Harm reduction > Substance use harm reduction
J Health care, prevention, harm reduction and treatment > Health related issues > Health information and education > Communicable / infectious disease control > Safe sex / sexual health
J Health care, prevention, harm reduction and treatment > Health care programme, service or facility
T Demographic characteristics > Person who uses substances (user / experience)
T Demographic characteristics > Person who injects drugs (Intravenous / injecting)
VA Geographic area > International
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